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(No Model.) 2 R. J. SMITH. 2 CHIMNEY GAP.

No. 282,392. Pate'nted July 31, 12883. H

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A 7 UNITED PATENT OFFICE.

RANSOMQTuSMITH,OF GEORGIA, VERMONT.

CHNI M NEY-CAP.

SPECIFICATION forngring part ofLetters Patent No.- 2e2,392, dated July 31, 1883.

Application filed A rils, 1883. (No model.) a

To allwhomit may. concern Be it known m thatI, RANsoM fJ. SMITH,a citizen ofthe'United- States of America, residing at Georgia,"inthe county; of {Franklin and State of Vermont, have invented certain new and useful 1 Improvements in Chimney-Caps;

and I do hereby; declare thefollowing to be a full, clear, andaexact description of the invention, such as will enable otherslskilled in the art to whichit appertains to make and use the same, referencefbeing had to the accompanying drawings, and to letters o'rffigures of reference marked thereon, which form apart of this specification. 1

This invention relatesto a cap to be placed upon a chimney for'increasing the draft and preventing downward currents of air from entering the chimney. V The construction and operation of the invention will be fullyunderstood from thefollowing particulardescription, in connection with the accompanying drawings, in which Figure 1 is aside elevation of my improved chimney-cap. Fig. 2 is a vertical section of the same; and Fig. 3 is a horizontal section on the line 00 m, Fig. 1. l

The letter Aindicates a base plate, which is 1 to rest upon the top of the chimney, and is pro ojects downward a sleeve, B, which enters the vided with a central opening, from which promouth of the chimney. From thetopof the base-plate, andsurroundingits central open ing, projects a collar, 0, upon which is fitted are formed at intervals oblong openings f, at

thelongitudinal centers of which. are secured angular deflecting-plates G G, having inwardspaces from the edge-walls of the opening.

lyextending diverging Wings 9 g, the inner edges of which are separated by intervening Upon the outer side of the. hood are secured guard-plates H, transversely bent to conform approximatelyto theshape of thehood. These v heated air rise from the chimney and pass through the sleeve B to the hood, draft-currentsare caused at the contractedop enings 011 each'f'side" of the deflecting-plates, and the pro.- ducts of combustion are then directed outwardly,:as indicated by the arrows in Fig. 3,

and escape past the edges of the guard-plates.

Theseguarcbplates have the double function of serving as the walls of draft-passages which continuethe draft even after the products of combustionleave the hood, and by covering the openings in said hood they prevent lateral air-currrents from entering the same and passing down the chimney. If currents of air strikeunder theseyguard-plates at one edge,

created bythedeflecting-plates alone, and that I this draft is very much re-enforced by the guardplates, in addition to the function of the latter in preventingair currents from entering the chimney.

It has been found in practice that my im-' proved chimney-cap prevents the smoking of stoves and fire places, and obviates the accumulation of soot and dripping of creosote, while at the same time prevents "excessive drafts in high winds.

Having now fully described my invention, what I claim is- I I 1. In a chimney-cap, the combination, with the hood D, having openings at intervals in the wall thereof, of the angular deflectingplates G, arranged in said openings, and the guard-plates standing outside of said openings and covering the same, substantially as described. 1

I 2. In a chimney-cap, the combination, with the base-plate A, having a central opening, and provided with the depending sleeve B and upwardly-projecting collar 0, of the covered funnelD, fitted upon said collar and provided with openings at intervals in its wall, the defiecting-plates G, and the guard-plates H, all constructed and arranged substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

Witnesses:

EDWARD MAYTIELD, H. O. MONAIL.

RANSOM J. SMITH. 

